The Boost Ball is an upgrade for the Morph Ball that has appeared in the Prime series. It allows Samus to charge up energy and boost forward with a massive amount of momentum when in Morph Ball Form, similar to the Speed Booster. The more Samus charges the boost, the faster she will go, similar to the Charge Beam. The Boost Ball can cause damage to most enemies on contact.

Metroid Prime Hunters

Samus is in possession of the Boost Ball at the beginning of Metroid Prime Hunters. It functions in a slightly different way than in the other games it appears in. While in the Morph Ball, if the player flicks the stylus in a direction, the ball will quickly boost in said direction. It requires a few moments to recharge, but it does not need to charge before use. It is not required in any way to beat the game, only as a time saver in Morph Ball tunnels.

Data

Manuals

The Boost Ball accelerates the Morph Ball. Once Samus finds this power-up, press and hold the B Button to build up a speed boost. When you release the B Button, Samus will accelerate in the direction she is rolling. This is especially useful for boosting up the sides of half-pipe areas.[1]

Quickly slide the stylus in any direction on the Touch Screen to activate the Boost in that direction. This allows the Morph Ball to move at a higher speed for a short time. You can also boost by charging the R Button (L Button in left-handed control modes).[2]

Once Samus finds this power-up, press and hold the B Button to build up a speed boost. When you release the B Button, Samus will accelerate in whatever direction she is rolling or even boost up halfpipes.[3]

Once you have obtained the Boost Ball ability, press and hold the B Button to charge the ability, and then release the B Button to give a boost to the Morph Ball's speed. Note that the longer you hold the B Button, the faster your boost will be.[4]

If you have the Boost Ball ability, press and hold the B Button to charge the ability, and then release the B Button to give a boost to the Morph Ball's speed. Note that the longer you hold the B Button, the faster your boost will be.[5]

Metroid Prime 2: Echoes description

Samus's Notes

Metroid Prime

"When charging, the longer you hold , the longer (and faster) the Boost Charge will be. Throughout the environment you will encounter U-shaped channels known as half-pipes. Using the Boost Ball in theses areas will let you reach higher places. Build a charge as you descend in the half-pip, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights."[6]

Metroid Prime 2: Echoes

"When charging, the longer you hold , the longer (and faster) the Boost Charge will be. Throughout the environment you will encounter U-shaped channels known as half-pipes. Using the Boost Ball in theses areas will let you reach higher places. Build a charge as you descend in the half-pip, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights. You can damage some enemies by "boosting" into them."[7]

Metroid Prime 3: Corruption

"When charging, the longer you hold , the longer (and faster) the boost charge will be. Throughout the environment you will encounter U-shaped channels known as Half-pipes. Using the Boost Ball in these areas will let you reach higher places. Build a charge as you descend in the Half-pipe, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights. Some mechanisms will have circular channels that the Morph Ball can boost around. Repeatedly boosting through these channels will build a kinetic charge which will activate these devices. You can damage some enemies by boosting into them."[8]

References

↑"The Boost Ball accelerates the Morph Ball. Once Samus finds this power-up, press and hold the B Button to build up a speed boost. When you release the B Button, Samus will accelerate in the direction she is rolling. This is especially useful for boosting up the sides of half-pipe areas." Metroid Prime Instruction Booklet, Pg 21

↑"Quickly slide the stylus in any direction on the Touch Screen to activate the Boost in that direction. This allows the Morph Ball to move at a higher speed for a short time. You can also boost by charging the R Button (L Button in left-handed control modes)." Metroid Prime Hunters Instruction Booklet, Pg 31

↑"Once Samus finds this power-up, press and hold the B Button to build up a speed boost. When you release the B Button, Samus will accelerate in whatever direction she is rolling or even boost up halfpipes." Metroid Prime 2: Echoes Instruction Booklet, Pg 20

↑"Once you have obtained the Boost Ball ability, press and hold the B Button to charge the ability, and then release the B Button to give a boost to the Morph Ball's speed. Note that the longer you hold the B Button, the faster your boost will be." Metroid Prime: Trilogy Instruction Booklet, Pg 14 and 39

↑"If you have the Boost Ball ability, press and hold the B Button to charge the ability, and then release the B Button to give a boost to the Morph Ball's speed. Note that the longer you hold the B Button, the faster your boost will be." Metroid Prime: Trilogy Instruction Booklet, Pg 26

↑"When charging, the longer you hold , the longer (and faster) the Boost Charge will be. Throughout the environment you will encounter U-shaped channels known as half-pipes. Using the Boost Ball in theses areas will let you reach higher places. Build a charge as you descend in the half-pip, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights." —Samus's Notes (Metroid Prime)

↑"When charging, the longer you hold , the longer (and faster) the Boost Charge will be. Throughout the environment you will encounter U-shaped channels known as half-pipes. Using the Boost Ball in theses areas will let you reach higher places. Build a charge as you descend in the half-pip, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights. You can damage some enemies by "boosting" into them." —Samus's Notes (Metroid Prime 2: Echoes)

↑"When charging, the longer you hold , the longer (and faster) the boost charge will be. Throughout the environment you will encounter U-shaped channels known as Half-pipes. Using the Boost Ball in these areas will let you reach higher places. Build a charge as you descend in the Half-pipe, then trigger the Boost as you ascend the other side. This will give you the speed and momentum you need to reach new heights. Some mechanisms will have circular channels that the Morph Ball can boost around. Repeatedly boosting through these channels will build a kinetic charge which will activate these devices. You can damage some enemies by boosting into them." —Samus's Notes (Metroid Prime 3: Corruption)